Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/ModelBinding/ModelErrorCollection.cs

@@ -0,0 +1,16 @@
+namespace System.Web.ModelBinding {
+    using System;
+    using System.Collections.ObjectModel;
+
+    [Serializable]
+    public class ModelErrorCollection : Collection<ModelError> {
+
+        public void Add(Exception exception) {
+            Add(new ModelError(exception));
+        }
+
+        public void Add(string errorMessage) {
+            Add(new ModelError(errorMessage));
+        }
+    }
+}